TRELLEBORG, Sweden (Sept. 9, 2011) — Trelleborg Wheel Systems S.p.A. is developing a rim for high-horsepower tractors that incorporates “knurling” in the bead area that the firm claims will reduce tire-rim slippage and therefore boost performance.
“Trelleborg believes that the perfect match between tire and rim plays an essential role in responding to the requirements of increased engine power and modern transmissions in tractors,” according to Paolo Pompei, president of the Trelleborg Wheel's Agricultural and Forestry Tires division.
Knurling is a manufacturing process, typically conducted on a lathe, used to create a raised pattern on the surface of an otherwise smooth surface. In the case of the Trelleborg High Knurling (THK) wheel design, the company uses a saw edge-type of pattern.
Additionally, Trelleborg said it has developed a painting process that maximizes the friction characteristics of the rim when the tire is fitted, further enhancing the tire-rim bond.
The innovation is the result of Trelleborg's research and joint development initiatives with leading agricultural equipment manufacturers.
Trelleborg did not indicate when the THK wheel would be sold commercially.